The marine nitrogen (N) cycle controls the productivity of the oceans. This cycle is driven by
complex biogeochemical transformations, including nitrogen fixation, denitrification, and …

Cyanobacterial nitrogen-fixers (diazotrophs) play a key role in biogeochemical cycling of
carbon and nitrogen in the ocean. In recent years, the unusual symbiotic diazotrophic …

Marine N 2 fixing microorganisms, termed diazotrophs, are a key functional group in marine
pelagic ecosystems. The biological fixation of dinitrogen (N 2) to bioavailable nitrogen …

Biological dinitrogen fixation provides the largest input of nitrogen to the oceans, therefore
exerting important control on the ocean's nitrogen inventory and primary productivity …

The availability of nitrogen is important in regulating biological productivity in marine
environments. Deepwater nitrate has long been considered the major source of new …

Colonies of the Caribbean coral Montastraea cavernosa (Linnaeus) that harbor
endosymbiotic cyanobacteria can fix nitrogen, whereas conspecifics without these …

ABSTRACT Dinitrogen (N2)-fixing microorganisms (diazotrophs) play important roles in
ocean biogeochemistry and plankton productivity. In this study, we examined the presence …

Phyllotaxy describes the geometric pattern of leaves and flowers, and has intrigued
botanists and mathematicians for centuries,. How these patterns are initiated is poorly …

Nitrogen fixation is an essential process that biologically transforms atmospheric dinitrogen
gas to ammonia, therefore compensating for nitrogen losses occurring via denitrification and …

In large areas of the world's oceans, biological dinitrogen (N 2) fixation supports a significant
fraction of ecosystem productivity; to date, however, there is little information on the …